Department of Ecology and Evolution, University of Lausanne, Lausanne, Switzerland.
J Evol Biol. 2019 Jan;32(1):126-130. doi: 10.1111/jeb.13393. Epub 2018 Nov 9.
Many asexual animal populations comprise a mixture of genetically different lineages, but to what degree this genetic diversity leads to ecological differences remains often unknown. Here, we test whether genetically different clonal lineages of Aptinothrips grass thrips differ in performance on a range of plants used as hosts in natural populations. We find a clear clone-by-plant species interactive effect on reproductive output, meaning that clonal lineages perform differently on different plant species and thus are characterized by disparate ecological niches. This implies that local clonal diversities can be driven and maintained by frequency-dependent selection and that resource heterogeneity can generate diverse clone assemblies.
许多无性动物种群由遗传上不同的谱系混合组成，但这种遗传多样性在多大程度上导致生态差异仍然未知。在这里，我们测试了在自然种群中用作宿主的一系列植物上，遗传上不同的克隆谱系的 Aptinothrips 草蓟马在表现上是否存在差异。我们发现繁殖产量上存在明显的克隆-植物种互作效应，这意味着克隆谱系在不同的植物物种上表现不同，因此具有不同的生态位。这意味着局部克隆多样性可以由频率依赖选择驱动和维持，并且资源异质性可以产生不同的克隆组合。
